20280953

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 26002944

約数和(自身を除く): 5721991

約数列:

[1, 7, 11, 49, 77, 191, 197, 539, 1337, 1379, 2101, 2167, 9359, 9653, 14707, 15169, 37627, 102949, 106183, 263389, 413897, 1843723, 2897279, 20280953]

約数ペア:

[(1, 20280953), (7, 2897279), (11, 1843723), (49, 413897), (77, 263389), (191, 106183), (197, 102949), (539, 37627), (1337, 15169), (1379, 14707), (2101, 9653), (2167, 9359)]